Table 1.
Micronutrient composition of vitamin and mineral (VTM) supplement 1 provided to beef heifers during the first trimester of gestation; company guaranteed analysis.
| Item | Assurance Levels | |
|---|---|---|
| Minerals 1 | Min | Max |
| Calcium, g/kg of DM | 135.0 | 162.0 |
| Phosphorus, g/kg of DM | 75.0 | - |
| Sodium Chloride, g/kg of DM | 180.0 | 216.0 |
| Magnesium, g/kg of DM | 10.0 | - |
| Potassium, g/kg of DM | 10.0 | - |
| Manganese, mg/kg of DM | 3600.0 | - |
| Cobalt, mg/kg of DM | 12.0 | - |
| Copper, mg/kg of DM | 1200.0 | - |
| Iodine, mg/kg of DM | 60.0 | - |
| Selenium, mg/kg of DM | 27.0 | - |
| Zinc, mg/kg of DM | 3600.0 | - |
| Vitamins 2, IU/kg of DM | ||
| A | 661,500.0 | |
| D | 66,150.0 | |
| E | 661.5 | |
1 Purina Wind and Rain Storm All Season 7.5 Complete Mineral (Land O’Lakes, Inc., Arden Hills, MN, USA); Ingredients: Dicalcium Phosphate, Monocalcium Phosphate, Processed Grain By-Products, Plant Protein Products, Calcium Carbonate, Molasses Products, Salt, Mineral Oil, Potassium Chloride, Magnesium Oxide, Ferric Oxide, Vitamin E Supplement, Vitamin A Supplement, Lignin Sulfonate, Cobalt Carbonate, Manganese Sulfate, Ethylenediamine Dihydroiodide, Zinc Sulfate, Copper Chloride, Vitamin D3 Supplement, Natural and Artificial Flavors, Sodium Selenite. Post-breeding, the VTM supplement was delivered as a pelleted product fed at 0.45 kg•heifer−1•day−1 (consisting of 113 g of a mineral and vitamin supplement, formulated to deliver similar levels of vitamins and minerals that were fed pre-breeding and 337 g of a carrier). 2 Ingredients: Vitamin A Supplement (proprietary), Vitamin E Supplement (proprietary), Vitamin D3 Supplement (proprietary).